<template>
    <div>
        <div class="search">
            <input v-model="keyword" type="text" class="search-input" placeholder="城市或拼音">
        </div>
        <div class="search-content" ref="search" v-show="keyword">
            <ul>
                <li v-for="item of list" :key="item.id" class="border-bottom" @click="handleCityClick(item.name)">{{item.name}}</li>
                <li class="border-bottom" v-show="hasNoData">没有找到相关内容</li>
            </ul>
        </div>
    </div>
</template>

<script>
import {mapMutations} from 'vuex'
import Bscroll from 'better-scroll'
export default {
  name: 'CitySearch',
  props: {
    cities: Object
  },
  data () {
    return {
      keyword: '',
      list: [],
      timer: null
    }
  },
  computed: {
    hasNoData () {
      return !this.list.length
    }
  },
  watch: {
    keyword () {
      if (this.timer) {
        clearTimeout(this.timer)
      }
      if (!this.keyword) {
        this.list = []
        return
      }
      this.timer = setTimeout(() => {
        const result = []
        for (let i in this.cities) {
          this.cities[i].forEach((value) => {
            if (value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1) {
              result.push(value)
            }
          })
        }
        this.list = result
      }, 100)
    }
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.search)
  },
  methods: {
    handleCityClick (city) {
      this.changeCity(city)
      this.$router.push('./')
    },
    ...mapMutations(['changeCity'])
  }
}
</script>

<style lang='stylus' scoped>
@import '~styles/varibles.styl'
.search{
    height:.72rem;
    background :$bgColor;
    padding:0 .1rem;
}
.search-input{
    height:.62rem;
    line-height:.62rem;
    width:100%;
    text-align :center;
    border-radius:.06rem;
    color:#666;
    padding:0 .1rem;
    box-sizing:border-box
}
.search-content{
    overflow:hidden;
    position:absolute;
    top:1.58rem;
    left:0;
    right:0;
    bottom:0;
    background:#eee;
    z-index:1;
    li{
        line-height:.62rem;
        padding-left:.2rem;
        color:#666;
        background :#fff;
    }
}
</style>
